Evolutionists put forth the position that the fossil record proves evolution. However, and I will admit that I am out of my depth here, this is in dispute. Those who study this from my perspective say that the fossil record does not ever show evidence of intraspecies evolution.
I guess one aspect of the whole argument is that there are holes and unknowns in all the postulations and theories about Creation and how we got to the point we are at. One of my objections to evolution is that it appears to have taken over the playing field, and it proponents shout down anyone who objects, frequently with personal attacks.
A problem is a problem only as long as it has a possible solution. Lacking that, it becomes a FACT!